Can’t drag/move widgets in dashboard

Just a month ago, I added widgets to my sidebar and easily changed the order by simply dragging them up and down. Now the widgets in the dashboard are stationary and refuse to move. They only highlight when I click on them, I can’t get them to drag. And I’m stuck with new widgets at the bottom of the side-bar, even if that’s not where I want them. If I had to connect it to something, it would be when I upgraded to 2.7.1. How can I fix this?

I’ve seen a few other strings in the forum with this question, none of them resolved. Any ideas how to get around this?